IIC Permits Reference 
Construction Specifier
SEPTEMBER 5, 2024
Finally, even with all the references to the sounds of “running of mechanical systems,” design of HVAC, ductwork and venting, plumbing, and vertical transportation are always improving to operate more efficiently and quietly, thus lowering interior noise pollution.
Construction Specifier
JUNE 30, 2021
The wood I-joist (WIJ) assemblies were added to DCA3 in 2001 and were intended to promote the usage of engineered lumber by simplifying the associated design, specification, and permitting processes. This article will go into more detail on the shortcomings of both DCA3 and the manufacturer fire tests.
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